CONTROL CIRCUIT OF TRANSPORTABLE CRUSHER

WIPO Patent Application WO/1996/034690

A1

A control circuit of a transportable crusher, which improves simultaneous operability, fine adjustment and reproducibility when the same pump is used to supply fluid to hydraulic motors and actuators to drive machines having different loads. The control circuit includes at least one variable-delivery hydraulic pump (1); transfer valves (12, 13, 14, 15, 16, 17, 18, 19, 20, 21) for conducting and interrupting the working fluid supplied from the hydraulic pump to hydraulic motors and actuators (25a, 26a, 27a, 28a, 29a, 30a, 31a, 32a, 33a, 34a); pressure compensation control valves (11) for inputting front and back pressure of switch valves, controlling the discharge flow rate of the hydraulic pump (1) so that the difference of these front and back pressures becomes constant, and distributing the discharge flow rate in accordance with required power of the individual hydraulic motors and actuators, or in a predetermined sequence when the switch valves are simultaneously operated; and control means (41) for controlling switch valves to predetermined values set in accordance with the load of the corresponding hydraulic motors and actuators.

JPH0681804	CONTROLLER OF ACTUATOR
JP5174804	Hydraulic control device

NAKAYAMA TORU (JP)
TAMURA YUKIO (JP)
KITANI TOSHIO (JP)
KOYANAGI SATORU (JP)
OZAWA YUJI (JP)
YUZAWA YOSHIMITSU (JP)
IKEGAMI KATSUHIRO (JP)
TAKIGUCHI MIKIHISA (JP)

PCT/JP1996/001201

November 07, 1996

May 01, 1996

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KOMATSU MFG CO LTD (JP)
NAKAYAMA TORU (JP)
TAMURA YUKIO (JP)
KITANI TOSHIO (JP)
KOYANAGI SATORU (JP)
OZAWA YUJI (JP)
YUZAWA YOSHIMITSU (JP)
IKEGAMI KATSUHIRO (JP)
TAKIGUCHI MIKIHISA (JP)

F15B11/00; B02C18/00; B02C21/02; B02C25/00; E02F9/22; F15B11/05; F15B11/16; (IPC1-7): B02C21/02

JPH0681641U	1994-11-22
JPH073726U	1995-01-20

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